Base station apparatus and method of allocating resource at base station apparatus

Abstract

A base station apparatus 102 is provided with a terminal state management section 107 that manages the state as to whether a communication terminal apparatus 101 which belongs to the cell covered by the own apparatus is in communication or waiting for a call, a decision section 1051 that decides whether the communication terminal apparatus 101 is stationary or moving and a resource reservation allocation section 1052 that allocates reservations of resources according to the respective numbers of moving terminal apparatuses and stationary terminal apparatuses calculated based on the decision result, and performs state management according to the actual state of the communication terminal apparatus 101 and allocates resources to the respective moving terminal apparatuses and stationary terminal apparatuses appropriately.

1 . A base station apparatus comprising: 
 a terminal state decision section that decides a terminal state as to whether a communication terminal apparatus which belongs to a cell covered by said base station apparatus itself is in communication or waiting for a call;    a decision section that decides whether said communication terminal apparatus decided by said terminal state decision section to be in communication or waiting for a call is stationary or moving and creates a decision result; and    a resource reservation allocation section that reserves resources for said respective apparatuses according to the number of said moving communication terminal apparatuses and the number of said stationary communication terminal apparatuses calculated based on said decision result.    
     
     
         2 . The base station apparatus according to  claim 1 , wherein said terminal state decision section decides that said communication terminal apparatus is in communication, when said resources are secured for said communication terminal apparatus and decides that said communication terminal apparatus is waiting for a call when said communication terminal apparatus registers the position in said base station apparatus and can receive a call from said other communication terminal apparatus.  
     
     
         3 . The base station apparatus according to  claim 1 , further comprising a periodic signal detection section that detects signals periodically output by said communication terminal apparatus, 
 wherein said decision section decides that said communication terminal apparatus is moving when said communication terminal apparatus registers the position in said cell and changes said decision result from “moving” to “stationary” when said periodic signal detection section detects said signals from said communication terminal apparatus for a certain period of time thereafter.    
     
     
         4 . The base station apparatus according to  claim 1 , further comprising a radio wave measuring section that detects signals periodically output by said communication terminal apparatus and measures radio wave intensity of said signals, 
 wherein said decision section decides that said communication terminal apparatus is moving when said communication terminal apparatus registers the position in said cell and changes said decision result from “moving” to “stationary” when a variation in the radio wave intensity of said signal detected by said radio wave measuring section falls within a predetermined range thereafter.    
     
     
         5 . The base station apparatus according to  claim 3 , wherein said signals periodically output by said communication terminal apparatus are channelization codes, scrambling codes or periodic update of a common channel.  
     
     
         6 . The base station apparatus according to  claim 1 , wherein said resource reservation allocation section allocates resources reserved for said stationary communication terminal apparatuses and resources reserved for said moving communication terminal apparatuses representing certain rates of the total numbers of said stationary communication terminal apparatuses and said moving communication terminal apparatuses in said cell from resources of the base station apparatus.  
     
     
         7 . The base station apparatus according to  claim 1 , further comprising a resource securing section that secures the resources of the base station apparatus for said communication terminal apparatus which starts a communication, 
 wherein said resource securing section secures unreserved resources first when said resources of said base station apparatus are secured for said communication terminal apparatus which starts said communication.    
     
     
         8 . The base station apparatus according to  claim 1 , wherein when said communication terminal apparatus finishes a communication or when said communication terminal apparatus moves to another cell through handover, said resource reservation allocation section recalculates the number of resources reserved for said stationary communication terminal apparatuses and the number of resources reserved for said moving communication terminal apparatuses when said resources secured by said resource securing section are released and adds said reserved resources from said reserved resources and said resources other than said resources secured for said communication terminal apparatuses when the actual number of reserved resources is lacking.  
     
     
         9 . A method of allocating resource reservations at a base station apparatus comprising: 
 a step of deciding whether a communication terminal apparatus is waiting for a call or not;    a step of deciding whether said communication terminal apparatus decided to be waiting for a call is stationary or moving and creating a decision result; and    a resource reservation allocating step of allocating reservations of resources for said respective apparatuses according to the number of said moving communication terminal apparatuses and the number of said stationary communication terminal apparatuses calculated based on said decision result.    
     
     
         10 . The method of allocating resource reservations at a base station apparatus according to  claim 9 , further comprising: 
 a step of deciding, when said communication terminal apparatus registers the position in said cell, that said communication terminal apparatus is moving; and    a step of changing said decision result from “moving” to “stationary” when said signal from said communication terminal apparatus is detected for a certain period thereafter.    
     
     
         11 . The method of allocating resource reservations at a base station apparatus according to  claim 9 , further comprising: 
 a step of deciding, when said communication terminal apparatus registers the position in said cell, that said communication terminal apparatus is moving; and    a step of changing said decision result from “moving” to “stationary” when a variation in the radio wave intensity of said signal falls within a certain range.    
     
     
         12 . The method of allocating resource reservations at a base station apparatus according to  claim 9 , further comprising: 
 a step of allocating the resources of said base station apparatus as resources reserved for said stationary communication terminal apparatuses and resources reserved for said moving communication terminal apparatuses representing certain rates in the total number of said stationary communication terminal apparatuses and said moving communication terminal apparatuses in said cell;    a step of securing said resources not reserved when said resources of said base station apparatus are secured for said communication terminal apparatus which starts a communication first; and    a step of recalculating, when said communication terminal apparatus finishes a communication or when said communication terminal apparatus moves to another cell through handover, the numbers of resources reserved for said stationary communication terminal apparatuses and resources reserved for said moving communication terminal apparatuses when said resources secured for said communication terminal apparatuses are released and adding said reserved resources and said resources other than said resources secured for said communication terminal apparatuses when the actual number of reserved resources is lacking to said reserved resources.